Groups of dependent preferences: Preference families are groups of lead preferences and their dependent preferences. A family can be made up of multiple preferences or of only one preference.

1 In some cases, a preference family is formed when one preference must be turned ON in order for other preferences to be available for adjustment (e.g. the Speak Text preference must be turned ON before the "Words spoken per minute" preference can be adjusted).

2 In other cases, preferences form a family when the adjustment of one preference limits the availability of other preferences (e.g. in the Text Style family, the availability of italics, all-caps and weight preferences might be limited by a selection of font style, since not all fonts have the available style attributes). 

3 Note that preference dependencies may also exist within a preference family and will not necessarily form a complete family in themselves (e.g. within the Text to Speech family, text highlighting must be selected before text highlighting colour can be specified). 

 Examples: Speak Text, Text Style, Magnifier

View Preference Family Functionality ⇾

Enhancements and alternatives: Individual preferences include enhancements or alternatives to media that allow customization of the existing interface or interaction. For example, the Text size preference allows enhancement of the existing text size, while Speak text provides an alternative to text altogether. Dependent preferences are grouped into families. Each preference belongs to only one family.

Examples: screen reader volume, punctuation verbosity, text font size, captions language, mouse keys ON, cursor size, brightness, background colour  

Adjusters

Anchor
adjusters adjusters

Interface interactables: Adjusters are used to modify a preference.  A preference may have more than one mode of adjustment (e.g. a slider as well as a text entry field).

1 The same adjuster element can be used for multiple preferences across different families (e.g. a +/- input field is used for preferences where a numerical value is useful for the user or value is required to be infinite).

2 A preference can be represented by multiple adjusters depending on the need of the context or the user (e.g. on/off toggle or button etc.).

3 In some cases preferences may be modified without using an adjuster (e.g. text size may be inferred by the probable viewing distance and automatically adjusted).

Examples: on/off toggles, -/+ input fields, sliders...

View adjuster descriptions ⇾

Preference activation bundles: Starter combos contain a group of preferences, related through a particular user need, which are activated all at once.  They provide a means of "getting in the door" for users unfamiliar with modifying their settings or users who cannot access the tools as-is.  When a starter combo is turned on, it activates all associated preferences and automatically sets the preferences to pre-determined values. Starter combos get the user to a "good enough" place, thus allowing them to use the tools to further modify their preferences, or to carry on with the task at hand.

e.g. activating the ‘More contrast’ preset will activate preferences from both the ‘Contrast’ family and the ‘Text style’ family)

Examples: More contrast, More text, Speak